NSC LM6511IM 180 ns 3v comparator Datasheet

LM6511
180 ns 3V Comparator
General Description
Features
The LM6511 voltage comparator is ideal for analog-digital interface circuitry when only a +3V or +3.3V supply is available. The open-collector output permits signal compatibility
with a wide variety of digital families: +5V CMOS, +3V
CMOS, TTL and so on. Supply voltage may range from 2.7V
to 36V between supply voltage leads. The LM6511 operates
with little power consumption (Pdiss < 9.45 mW at V+ =
+2.7V and V− = 0V).
This voltage comparator offers many features that are available in traditional sub-microsecond comparators: output
sync strobe, inputs and output may be isolated from system
ground, and wire-ORing. Also, the LM6511 uses the
industry-standard, single comparator pinout configuration.
(Typical unless otherwise noted)
n Operates at +2.7V, +3V, +3.3V, +5V
n Low Power consumption < 9.45 mW @ V+ = 2.7V (max)
n Fast Response Time of 180 ns
Applications
n Portable Equipment
n Cellular Phones
n Digital Level Shifting
Connection Diagram
8-Pin SO
DS011888-1
Ordering Information
Package
8-Pin Small Outline
© 1999 National Semiconductor Corporation
DS011888
Industrial Temperature Range
NSC Package
−40˚C to +85˚C
Drawing
LM6511IM
M08A
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LM6511 180 ns 3V Comparator
June 1999
Absolute Maximum Ratings (Note 1)
Power Dissipation
Output Short Circuit Duration
Junction Temperature
ESD Rating
(C = +100 pF, R = 1.5 kΩ)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage
Output to Negative Supply Voltage
Ground to Negative Supply Voltage
Differential Input Voltage
Input Voltage
Storage Temperature Range
Soldering Information:
SO Package
(Vapor Phase in 60 sec)
SO Package (Infrared in 15 sec)
−0.3 to +36V
50V
30V
± 30V
(Note 2)
−65˚C to +150˚C
500 mW
10s
150˚C
300V
Operating Ratings (Note 1)
Supply Voltage
Temperature Range
Thermal Resistance (θJA)
SO Package
2.5V to 30V
−40˚C ≤ TJ ≤ +85˚C
170˚C/W
215˚C
220˚C
DC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C. Boldface limits apply at the temperature extremes. V+ = 2.7V,
V− = 0V, 50Ω ≤ RL ≤ 50kΩ, and IL = 1.0 mA unless otherwise specified
Symbol
Parameter
Conditions
Typical
LM6511I
Limit
RS ≤ 50 kΩ
Offset Voltage
VOS
1.5
(Note 3)
IB
Input Bias Current
38
5
mV
8
max
130
200
IOS
Input Offset Current
IS
RS ≤ 50 kΩ
Units
(Limits)
nA
max
1.5
20
Positive Supply Current
2.7
3.5
Negative Supply Current
1.5
2.0
0.23
0.4
V
0.4
max
(Note 3)
50
5
mA
max
2.5
VSAT
VIN ≤ 10 mV
ISINK = 8 mA
Saturation Voltage
AV
Large Signal Voltage Gain
CMRR
Common Mode Rejection Ratio
ISTROBE
Strobe ON Current
VIN
Input Voltage Range
∆VOUT = 2V
40
V/mV
72
(Note 5)
VIN ≥ 10 mV, VOUT = 35V,
ISTROBE = 3 mA
Output Leakage Current
dB
2.0
5.0
mA max
0.50
V min
V+ − 1.25
V max
0.2
nA
max
AC Electrical Characteristics
Unless otherwise specified, all limits guaranteed for TJ = 25˚C. Boldface limits apply at the temperature extremes. V+ = 2.7V,
V− = 0V, 50Ω ≤ RL ≤ 50kΩ, and IL = 1.0 mA unless otherwise specified
Symbol
Parameter
Conditions
Typical
LM6511I
Limit
TR
Response Time
(Note 4)
180
Units
(Limits)
ns
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating ratings indicate conditions the device is intended to
be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed
specifications apply only for the test conditions listed.
Note 2: The positive input voltage limit is 30V above the negative supply voltage. The negative input voltage limit is equal to the negative supply voltage or 30V below
the positive supply voltage, whichever is less.
Note 3: The offset voltage and offset current limits are the maximum values required to drive the output within a volt of either supply with a 1 mA load. Therefore,
these parameters define an error band and take into account the worst-case effects of voltage gain and input impedance.
Note 4: This specification is for a 100 mV input step with a 25 mV overdrive.
Note 5: This specification gives the range of current which must be drawn from the strobe pin to ensure the output is properly disabled. Do not short the strobe pin
to ground; it should be current driven at 3 mA to 5 mA.
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Schematic Diagram
DS011888-5
LM6511 Typical Performance Characteristics
Input Bias Current
VS = 3V unless otherwise noted
Input Offset Current
Input Current vs
Input Voltage
DS011888-9
DS011888-8
DS011888-10
3
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LM6511 Typical Performance Characteristics
Common Mode Limits
Transfer Function
Output Saturation Voltage
DS011888-12
DS011888-11
Output Current Limiting
VS = 3V unless otherwise noted (Continued)
Supply Current vs
Temperature
Output Leakage Current
DS011888-16
DS011888-14
DS011888-15
Propagation Delay vs Overdrive
DS011888-3
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DS011888-13
4
Typical Application
Universal Logic Level Shifter
DS011888-4
Notes: Because of the very wide operating and output voltage range, the LM6511 may be used to shift logic levels from 3V to TTL or CMOS to the other way
around. By biasing the input to 1⁄2 of the input logic supply (VA), this assures that this input remains within the input voltage range. The pull-up resistor should
go to the output logic supply (VB).
5
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Physical Dimensions
inches (millimeters) unless otherwise noted
8-Pin Small Outline Package (M)
Order Number LM6511IM
Package Number M08A
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LM6511 180 ns 3V Comparator
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
8-Pin Molded Dual-In-Line Package (N)
Order Number LM6511IN
Package Number N08E
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